Staying Sharp Double Up™ requires quick thinking and a sharp eye! You play by clicking on a tile, which reveals an image underneath. Remember what you’ve seen: As you uncover more images, you’ll need to match the pictures that are similar or identical. Once you’re done, you’ll move to a new set of tiles — and it gets harder as you go. You have two minutes and 30 seconds to match as many images as possible, so you’re working against the clock.